50+ years ago my family took a trip out west (from Michigan) and Dad being a farmer wanted to travel through Iowa to see miles and miles of corn. My first audio system was my Mom's old AM radio from around 1950 and a portable cassette recorder with a wired mike that I placed on the speaker and waited for a favorite song. My only DIY efforts were speaker, pre-amp, and power amp kits from the early 80's. Unless you can properly audition a loudspeaker, it is very hard to intelligently shop. Thus I don't recommend DIY loudspeakers.
BTW my favorite all around loudspeaker I owned was JBL 708P active studio monitors ($3800/pair). Even the desktop JBL 305 Mk2 ($300/pair) I could be satisfied with for a long time in a medium sized room.